A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/sv/volume-2015/709459/figures/709459.fig.008a.svgz" name="709459.fig.008a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Large area structural instability process during low-speed mining on the 20th of April</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2015/709459/figures/709459.fig.008b.svgz" name="709459.fig.008b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Large area structural instability process during high-speed mining on the 22nd of April</td></tr></table>

<div>Energy damage process comparisons between low-speed mining and high-speed mining.</div>

Shock and Vibration

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Figure 8

Figure 8: A Case Study of Damage Energy Analysis and an Early Warning by Microseismic Monitoring for Large Area Roof Caving in Shallow Depth Seams 